Chimney-valve for stoves or furnaces.



No- 738,828. PATENTED SEPT. 15, 1903.

P. MBE'HAN.

CHIMNEY VALVE FOR STOVES 0R FURNACES.

I APPLICATION FILED SEPT. 26, 1902. NO MODEL. 2 SHEETS-SHEET 1 MTHEEZS2S%X [NT/EH TOP $5M ATTOPNEYS No. 738,828. PATENTED SEPT. 15, 1903.

' P. MEBHAN.

CHIMNEY VALVE FOR STOVBS 0B. FURNACES.

. APPLIUATION FILED BERT. 26, 1908. N0 MODEL. 2 BHEETS-SHEET 2.

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Patented September 15, 1903.

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PATRICK MEEHAN, OF LOWELLVILLE, OHIO.

CHIMNEY-"VALVE FOR STOVES OR FURNACES.

SPECIFICATION forming part of Letters Patent No. 738,828, dated September 15, 1903.

Application filed September 26, 1902. Serial No. 124,945. (No model.)

T0 at whmn it may concern.-

Be it known that I, PATRICK IVIEEHAN, a resident of Lowellville, in the countyof Mahoning and State of Ohio, have invented a new anduseful Improvement in Ohimney-Valves for Stoves or Furnaces; and I do hereby declare the following to be a full, clear,and exact description thereof.

My invention relates to valves, and more especially to chimney-valves for hot-blast stoves and the like; and its object is to provide a valve for this purpose which is simple of construction and operation, which will provide a tight joint, and which can be used in any desired position or location.

In the accompanying drawings, Figure 1 is a plan view of my valve, showing a portion of the stack and the hot-blast stove in horizontal section and showing the valve closed. Fig. 2 is ahorizontal section of the same, showing the valve open. Fig. 3 is an end view of the valve, showing a portion of the stack. Fig. 4 is a longitudinal section through the valvecasing. Fig. 5 is a similar view through the valve. Fig. 6 is an end view of a valve,show ing the same applied to an underground flue; and Fig. 7 is a similar view showing it ap plied to an overhead flue.

In the drawings I have shown my invention applied to ahot-blast stove, and particularly to the connection from the stove to the stack; but it will of course be understood that it can be used in other relations--such, for instance, as with a gas-main for supplying gas to the hot-blast stove or to a furnace. In the drawings a portion of the hot-blast stove is diagrammatically shown at 1 and a portion of the chimney or stack at 2. As shown in Figs. 1 and 2, the stack is provided at one side with an opening 3, and secured to the stack at said opening is the valve-casing 4, this casing being provided with a side opening 5, communicating with the opening 3 in the stack. The main body of the valve-casing is cylindrical in shape, being open at one end, as at 6, and closed at the other, as at 7, and having the opening 5 through one of the side walls of said cylinder.

The valve comprises a hollow cylinder 8, open at both ends and making a fairly close fit with the cylindrical chamber in the valvecasing and being of such length that when retracted or moved inwardly it will entirely close the side opening 5. This cylindrical valve is provided near its inner end with a slight enlargement or shoulder 9, which when the valve is in its innermost position will bear against a shoulder 10 at the inner end of the valve-casing and close all communication at this point. It is also provided at its outer end with an annular ring or shoulder 11, which will bear against the outer face 12 of the valve-casing when the valve is closed, thus effectually sealing the same at this point.

The hot-blast stove l is provided with a port 13, surrounded by a ring 14, into which the outer end of the valve 8 will project when the valve is moved outwardly. In this position the shoulder 11 will contact with the outer face of the ring 14 and form a tight joint at this place.

The valve 8 may be moved in and out of the casing by any suitable means. I have shown for this purpose a lever 15, pivoted to cars 16, formed integrally with the valvecasing, said lever being forked, as shown, and having an arm extending to either side of the casing, the outer ends of said arms being connected by means of links 17 to the valve 8. To guide and steady the valve in its inward and outward movements, the casing is provided with suitable guides or supports 19, those shown being formed integral with the casing, although this is not essential. Two such guides or supports are shown, and they will be located so as to be on the lower side of the valve and thus support the same. These guides are provided with tongues or ribs 20, which take into suitable grooves 21, cut in the valve 8. A third guiding-tongue 22, taking into a similar groove, is provided opposite the two supports 19.

The valve shown and described is capable of being placed in any position. In Figs. 1 and 2 it is shown placed in a horizontal position and communicating with an upright stack or flue 2. InFig. 6 it is shown communicating with an underground flue 2 and in Fig. 7 with an overhead flue 2". In all of these figures it is shown placed in such position that the cylinder moves in a horizontal line; but obviously it could be so placed that said cylinder moves vertically or at any desired angle. Inasmuch as the valve and its casing are both cylindrical an equally tight joint will be insured no matter what the position of the valve may be.

The operation of the valve .will be readily understood from the foregoing description. When the valve is projected, as shown in Fig. 2, communication is open between the stove l and stack 2 or flue, and when the valve is retracted or moved into the casing, as shown in Fig. 1, the opening to the stack 2 or flue is out OK. In the latter position of the valve a cap will be placed over the port'13 of the hotblast stove, as is the usual practice. The valve is simple of construction, easy to operate, cannot readily get out of repair, and forms a tight joint no matter in What position it may be placed.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A valve comprising a casing having a chamber closed at one end and open at the other and also having an opening in one side, and a hollow valve open at both ends and movably mounted in said chamber and adapted when projected to uncover the side opening in the casing and when retracted to cover the same.

2. A valve comprising a casing having a cylindrical chamber closed at one end and open at the other and also having an opening in one side, a hollow cylindrical valve open at both ends and movably mounted in said chamber and adapted when projected to uncover the side opening in the casing and when retracted to cover the same, and supports on said casing upon which said valve is guided.

3. A valve comprising a casing having a cylindrical chamber closed at one end and open at the other and also having an opening on one side, and a hollow cylindrical valve open at both ends and movably mounted in said chamber and adapted when projected to uncover the side opening of the casing and when retracted to cover the same, said cylindrical valve being provided with an annular shoulder at its outer end adapted to contact with the outer face of the casing when the valve is closed.

4. A hot-blast stove or the like having a port, a flue, a valve-casing having a chamber provided with an opening in one side communicatiug with said flue, and a hollow valve movably mounted in said chamber, said valve being open at both ends and adapted when projected to fit into the port of the stove and when retractedv to cover the side opening in the valve-casing.

In testimony whereof I, the said PATRICK MEEHAN, have hereunto set my hand.

PATRICK MEEHAN. Witnesses:

RoB'r. D. TOTTEN, ROBERT C. TOTTEN. 

